def getCellSizeDB(points):

    from spatialdata.geocoords.CSCart import CSCart
    from spatialdata.spatialdb.SimpleDB import SimpleDB
    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii

    # Coordinate system for mesh (must match coordsys in ExodusII file)
    cs = CSCart()
    cs._configure()
    cs.initialize()

    # Spatial database with physical properties (Vs)
    dbIO = SimpleIOAscii()
    dbIO.inventory.filename = filenameDB
    dbIO._configure()
    db = SimpleDB()
    db.inventory.iohandler = dbIO
    db.inventory.label = "Physical properties"
    db.inventory.queryType = "linear"
    db._configure()
    
    (npoints, spacedim) = points.shape

    # Query database
    db.open()
    db.queryVals(["vs"])
    data = numpy.zeros((npoints, 1), dtype=numpy.float64)
    err = numpy.zeros((npoints,), dtype=numpy.int32)
    db.multiquery(data, err, points, cs)
    db.close()

    vs = data[:,0]
    cellSize = minPeriod*vs / 10.0
    return cellSize

  def test_preinitialize(self):
    """
    Test preinitialize().

    WARNING: This is not a rigorous test of initialize() because we
    don't verify the results.
    """
    from pylith.feassemble.FIATSimplex import FIATSimplex
    cell = FIATSimplex()
    cell.inventory.dimension = 2
    cell.inventory.order = 1
    cell.inventory.degree = 1
    cell._configure()

    from pylith.feassemble.Quadrature import Quadrature
    quadrature = Quadrature()
    quadrature.inventory.cell = cell
    quadrature.inventory.minJacobian = 1.0e-4
    quadrature._configure()

    from spatialdata.spatialdb.SimpleDB import SimpleDB
    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    iohandler = SimpleIOAscii()
    iohandler.inventory.filename = "data/matinitialize.spatialdb"
    iohandler._configure()
    db = SimpleDB()
    db.inventory.label = "material properties"
    db.inventory.iohandler = iohandler
    db._configure()

    from pylith.materials.ElasticPlaneStrain import ElasticPlaneStrain
    material = ElasticPlaneStrain()
    material.inventory.quadrature = quadrature
    material.inventory.dbProperties = db
    material.inventory.label = "my material"
    material.inventory.id = 54
    material._configure()

    from spatialdata.geocoords.CSCart import CSCart
    cs = CSCart()
    cs.inventory.spaceDim = 2
    cs._configure()

    from spatialdata.units.Nondimensional import Nondimensional
    normalizer = Nondimensional()
    normalizer._configure()

    from pylith.meshio.MeshIOAscii import MeshIOAscii
    importer = MeshIOAscii()
    importer.inventory.filename = "data/twoelems.mesh"
    importer.inventory.coordsys = cs
    importer._configure()
    mesh = importer.read(debug=False, interpolate=False)
    
    material.preinitialize(mesh)

    # No test of result.
    return

  def _preinitialize(self):
    """
    Setup mesh and integrator and preinitialize integrator.
    """
    from spatialdata.units.Nondimensional import Nondimensional
    normalizer = Nondimensional()
    normalizer._configure()

    # Setup mesh
    cs = CSCart()
    cs.inventory.spaceDim = 2
    cs._configure()
    from pylith.meshio.MeshIOAscii import MeshIOAscii
    importer = MeshIOAscii()
    importer.inventory.filename = "data/tri3.mesh"
    importer.inventory.coordsys = cs
    importer._configure()
    mesh = importer.read(debug=False, interpolate=False)

    # Setup material
    from pylith.feassemble.FIATSimplex import FIATSimplex
    cell = FIATSimplex()
    cell.inventory.dimension = 2
    cell.inventory.degree = 1
    cell.inventory.order = 1
    cell._configure()
    from pylith.feassemble.Quadrature import Quadrature
    quadrature = Quadrature()
    quadrature.inventory.cell = cell
    quadrature._configure()
    
    from spatialdata.spatialdb.SimpleDB import SimpleDB
    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    iohandler = SimpleIOAscii()
    iohandler.inventory.filename = "data/elasticplanestrain.spatialdb"
    iohandler._configure()
    db = SimpleDB()
    db.inventory.label = "elastic plane strain"
    db.inventory.iohandler = iohandler
    db._configure()

    from pylith.materials.ElasticPlaneStrain import ElasticPlaneStrain
    material = ElasticPlaneStrain()
    material.inventory.label = "elastic plane strain"
    material.inventory.id = 0
    material.inventory.dbProperties = db
    material.inventory.quadrature = quadrature
    material._configure()
    
    from pylith.meshio.OutputMatElastic import OutputMatElastic
    material.output = OutputMatElastic()
    material.output._configure()
    material.output.writer._configure()

    # Setup integrator
    integrator = ElasticityImplicitLgDeform()
    integrator.preinitialize(mesh, material)
    return (mesh, integrator)

def generate(sim, fileRoot, materials):

    for material in materials:

        filenameH5 = "../output/%s-%s.h5" % (sim, material)
        filenameDB = "%s-%s.spatialdb" % (fileRoot, material)

        # Open HDF5 file and get coordinates, cells, and stress.
        h5 = h5py.File(filenameH5, "r")
        vertices = h5['geometry/vertices'][:]
        cells = numpy.array(h5['topology/cells'][:], dtype=numpy.int)

        # Get stresses from final time step.
        stress = h5['cell_fields/stress'][-1,:,:]
        h5.close()

        # Compute coordinates of quadrature points.
        quadCoords = getCellCenters(vertices, cells)

        # Create writer for spatial database file
        writer = SimpleIOAscii()
        writer.inventory.filename = filenameDB
        writer._configure()
  
        values = [{'name': "stress-xx",
                   'units': "Pa",
                   'data': stress[:,0]},
                  {'name': "stress-yy",
                   'units': "Pa",
                   'data': stress[:,1]},
                  {'name': "stress-zz",
                   'units': "Pa",
                   'data': stress[:,2]},
                  {'name': "stress-xy",
                   'units': "Pa",
                   'data': stress[:,3]},
                  {'name': "stress-yz",
                   'units': "Pa",
                   'data': stress[:,4]},
                  {'name': "stress-xz",
                  'units': "Pa",
                   'data': stress[:,5]},
        ]
  
        writer.write({'points': quadCoords,
                      'coordsys': cs,
                      'data_dim': 3,
                      'values': values})

    return

  def run(self):
    """
    Generate the database.
    """
    # Domain
    x = numpy.arange(-4000.0, 4000.1, 1000.0)
    y = numpy.arange(-4000.0, 4000.1, 1000.0)
    z = numpy.arange(-6000.0, 0000.1, 1000.0)
    nptsX = x.shape[0]
    nptsY = y.shape[0]
    nptsZ = z.shape[0]

    xx = x * numpy.ones( (nptsY*nptsZ, 1), dtype=numpy.float64)
    yy0 = y * numpy.ones( (nptsZ, 1), dtype=numpy.float64)
    yy = yy0.ravel() * numpy.ones( (nptsX, 1), dtype=numpy.float64)
    zz = z * numpy.ones( (nptsX*nptsY, 1), dtype=numpy.float64)
    xyz = numpy.zeros( (nptsX*nptsY*nptsZ, 3), dtype=numpy.float64)
    xyz[:,0] = numpy.ravel(xx)
    xyz[:,1] = numpy.ravel(numpy.transpose(yy))
    xyz[:,2] = numpy.ravel(numpy.transpose(zz))

    from rigidbody_soln import AnalyticalSoln
    soln = AnalyticalSoln()
    disp = soln.displacement(xyz)

    from spatialdata.geocoords.CSCart import CSCart
    cs = CSCart()
    cs.inventory.spaceDim = 3
    cs._configure()
    data = {'locs': xyz,
            'coordsys': cs,
            'data_dim': 2,
            'values': [{'name': "displacement-x",
                        'units': "m",
                        'data': numpy.ravel(disp[:,0])},
                       {'name': "displacement-y",
                        'units': "m",
                        'data': numpy.ravel(disp[:,1])},
                       {'name': "displacement-z",
                        'units': "m",
                        'data': numpy.ravel(disp[:,2])}]}

    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    io = SimpleIOAscii()
    io.inventory.filename = "rigidbody_disp.spatialdb"
    io._configure()
    io.write(data)
    return

  def run(self):
    """
    Generate the database.
    """
    # Domain
    x = numpy.arange(-4000.0, 4000.1, 500.0)
    y = numpy.arange(-4000.0, 4000.1, 500.0)
    z = numpy.arange(-6000.0,    0.1, 500.0)
    nxpts = x.shape[0]
    nypts = y.shape[0]
    nzpts = z.shape[0]

    xx = numpy.tile(x, (1,nypts*nzpts))
    yy = numpy.tile(y, (nxpts,nzpts)).transpose()
    zz = numpy.tile(z, (nxpts*nypts,1)).transpose()

    xyz = numpy.zeros( (nxpts*nypts*nzpts, 3), dtype=numpy.float64)
    xyz[:,0] = numpy.ravel(xx)
    xyz[:,1] = numpy.ravel(yy)
    xyz[:,2] = numpy.ravel(zz)

    from axialdisp_soln import AnalyticalSoln
    soln = AnalyticalSoln()
    disp = soln.displacement(xyz)

    from spatialdata.geocoords.CSCart import CSCart
    cs = CSCart()
    cs.inventory.spaceDim = 3
    cs._configure()
    data = {'points': xyz,
            'coordsys': cs,
            'data_dim': 3,
            'values': [{'name': "displacement-x",
                        'units': "m",
                        'data': numpy.ravel(disp[:,0])},
                       {'name': "displacement-y",
                        'units': "m",
                        'data': numpy.ravel(disp[:,1])},
                       {'name': "displacement-z",
                        'units': "m",
                        'data': numpy.ravel(disp[:,2])}]}

    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    io = SimpleIOAscii()
    io.inventory.filename = "axial_disp.spatialdb"
    io._configure()
    io.write(data)
    return

  def testDBProperties(self):
    """
    Test dbProperties().
    """
    from spatialdata.spatialdb.SimpleDB import SimpleDB
    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    iohandler = SimpleIOAscii()
    iohandler.inventory.filename = "data/staticfriction.spatialdb"
    iohandler._configure()
    db = SimpleDB()
    db.inventory.label = "friction properties"
    db.inventory.iohandler = iohandler
    db._configure()

    self.friction.dbProperties(db)

    # No test of result.
    return

  def testDBInitialState(self):
    """
    Test dbInitialState().
    """
    from spatialdata.spatialdb.SimpleDB import SimpleDB
    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    iohandler = SimpleIOAscii()
    iohandler.inventory.filename = "data/matinitialize.spatialdb"
    iohandler._configure()
    db = SimpleDB()
    db.inventory.label = "material properties"
    db.inventory.iohandler = iohandler
    db._configure()

    self.material.dbInitialState(db)

    # No test of result.
    return

  def testDBInitialStrain(self):
    from spatialdata.spatialdb.SimpleDB import SimpleDB
    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    iohandler = SimpleIOAscii()
    iohandler.inventory.filename = "data/matinitialize.spatialdb"
    iohandler._configure()
    db = SimpleDB()
    db.inventory.label = "material properties"
    db.inventory.iohandler = iohandler
    db._configure()

    material = self.material
    material.inventory.label = "Elastic material"
    material.inventory.dbInitialStrain = db
    material.inventory.useInitialStrain = True
    material._configure()

    # No test of result.
    return

  def run(self):
    """
    Generate the database.
    """
    from sheardisp_soln import AnalyticalSoln
    soln = AnalyticalSoln()

    from spatialdata.geocoords.CSCart import CSCart
    cs = CSCart()
    cs.inventory.spaceDim = 3
    cs._configure()

    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    io = SimpleIOAscii()

    for component in ["x","y","z"]:
      if component == "y":
        xyz = numpy.array([[-40.0e+3, 0.0, 0.0],
                           [+40.0e+3, 0.0, 0.0]], dtype=numpy.float64)
        ic = 1
      elif component == "x":
        xyz = numpy.array([[0.0, -40.0e+3, 0.0],
                           [0.0, +40.0e+3, 0.0]], dtype=numpy.float64)
        ic = 0
      elif component == "z":
        xyz = numpy.array([[0.0, 0.0, -40.0e+3],
                           [0.0, 0.0,   0.0]], dtype=numpy.float64)
        ic = 2
      disp = soln.displacement(xyz)

      io.inventory.filename = "shear_disp%s.spatialdb" % component
      io._configure()
      data = {'points': xyz,
              'coordsys': cs,
              'data_dim': 1,
              'values': [{'name': "displacement-%s" % component,
                          'units': "m",
                          'data': numpy.ravel(disp[0,:,ic])},
                         ]}
      io.write(data)
    
    return

    def run(self):
        """
    Generate the database.
    """
        # Domain
        x = numpy.arange(-4000.0, 4000.1, 1000.0)
        y = numpy.arange(-4000.0, 4000.1, 1000.0)
        npts = x.shape[0]

        xx = x * numpy.ones((npts, 1), dtype=numpy.float64)
        yy = y * numpy.ones((npts, 1), dtype=numpy.float64)
        xy = numpy.zeros((npts ** 2, 2), dtype=numpy.float64)
        xy[:, 0] = numpy.ravel(xx)
        xy[:, 1] = numpy.ravel(numpy.transpose(yy))

        from sheardisp_soln import AnalyticalSoln

        soln = AnalyticalSoln()
        disp = soln.displacement(xy)

        from spatialdata.geocoords.CSCart import CSCart

        cs = CSCart()
        cs.inventory.spaceDim = 2
        cs._configure()
        data = {
            "points": xy,
            "coordsys": cs,
            "data_dim": 2,
            "values": [
                {"name": "displacement-x", "units": "m", "data": numpy.ravel(disp[0, :, 0])},
                {"name": "displacement-y", "units": "m", "data": numpy.ravel(disp[0, :, 1])},
            ],
        }

        from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii

        io = SimpleIOAscii()
        io.inventory.filename = "shear_disp.spatialdb"
        io._configure()
        io.write(data)
        return

  def run(self):
    """
    Generate the database.
    """
    # Domain
    dx = 200.0
    x = numpy.arange(-1000.0, 1000.1, dx)
    y = numpy.arange(-1000.0, 0.1, dx)
    nptsx = x.shape[0]
    nptsy = y.shape[0]

    xx = x * numpy.ones( (nptsy, 1), dtype=numpy.float64)
    yy = y * numpy.ones( (nptsx, 1), dtype=numpy.float64)
    xy = numpy.zeros( (nptsx*nptsy, 2), dtype=numpy.float64)
    xy[:,0] = numpy.ravel(xx)
    xy[:,1] = numpy.ravel(numpy.transpose(yy))

    from compressrotate_soln import AnalyticalSoln
    soln = AnalyticalSoln()
    disp = soln.displacement(xy)

    from spatialdata.geocoords.CSCart import CSCart
    cs = CSCart()
    cs.inventory.spaceDim = 2
    cs._configure()
    data = {'points': xy,
            'coordsys': cs,
            'data_dim': 2,
            'values': [{'name': "displacement-x",
                        'units': "m",
                        'data': numpy.ravel(disp[0,:,0])},
                       {'name': "displacement-y",
                        'units': "m",
                        'data': numpy.ravel(disp[0,:,1])}]}

    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    io = SimpleIOAscii()
    io.inventory.filename = "compressrotate_disp.spatialdb"
    io._configure()
    io.write(data)
    return

  def test_initialize(self):
    """
    Test initialize().
    """
    from spatialdata.spatialdb.SimpleDB import SimpleDB
    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii

    ioFinalSlip = SimpleIOAscii()
    ioFinalSlip.inventory.filename = "finalslip.spatialdb"
    ioFinalSlip._configure()
    dbFinalSlip = SimpleDB()
    dbFinalSlip.inventory.iohandler = ioFinalSlip
    dbFinalSlip.inventory.label = "final slip"
    dbFinalSlip._configure()
    
    ioSlipTime = SimpleIOAscii()
    ioSlipTime.inventory.filename = "sliptime.spatialdb"
    ioSlipTime._configure()
    dbSlipTime = SimpleDB()
    dbSlipTime.inventory.iohandler = ioSlipTime
    dbSlipTime.inventory.label = "slip time"
    dbSlipTime._configure()
    
    slipFn = StepSlipFn()
    slipFn.inventory.dbSlip = dbFinalSlip
    slipFn.inventory.dbSlipTime = dbSlipTime
    slipFn._configure()
    slipFn.preinitialize()
    slipFn.verifyConfiguration()
    slipFn.initialize()
    return

  def test_configure(self):
    """
    Test initialize().
    """
    from spatialdata.spatialdb.SimpleDB import SimpleDB
    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    from pyre.units.time import second

    ioInitial = SimpleIOAscii()
    ioInitial.inventory.filename = "tri3_initialtractions.spatialdb"
    ioInitial._configure()
    dbInitial = SimpleDB()
    dbInitial.inventory.iohandler = ioInitial
    dbInitial.inventory.label = "initial tractions"
    dbInitial._configure()
    
    ioChange = SimpleIOAscii()
    ioChange.inventory.filename = "tri3_changetractions.spatialdb"
    ioChange._configure()
    dbChange = SimpleDB()
    dbChange.inventory.iohandler = ioChange
    dbChange.inventory.label = "traction change"
    dbChange._configure()
    
    tract = TractPerturbation()
    tract.inventory.dbInitial = dbInitial
    tract.inventory.dbChange = dbChange
    tract._configure()
    return

  def run(self):
    """
    Generate the database.
    """
    # Domain
    x = numpy.arange(-4000.0, 4000.1, 500.0)
    y = numpy.arange(-4000.0, 4000.1, 500.0)
    npts = x.shape[0]

    xx = x * numpy.ones( (npts, 1), dtype=numpy.float64)
    yy = y * numpy.ones( (npts, 1), dtype=numpy.float64)
    xy = numpy.zeros( (npts**2, 2), dtype=numpy.float64)
    xy[:,0] = numpy.ravel(xx)
    xy[:,1] = numpy.ravel(numpy.transpose(yy))

    disp = self.soln.displacement(xy)

    from spatialdata.geocoords.CSCart import CSCart
    cs = CSCart()
    cs.inventory.spaceDim = 2
    cs._configure()
    data = {'points': xy,
            'coordsys': cs,
            'data_dim': 2,
            'values': [{'name': "displacement-x",
                        'units': "m",
                        'data': numpy.ravel(disp[0,:,0])},
                       {'name': "displacement-y",
                        'units': "m",
                        'data': numpy.ravel(disp[0,:,1])}]}

    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    io = SimpleIOAscii()
    io.inventory.filename = self.filename
    io._configure()
    io.write(data)
    return

  def test_initialize(self):
    """
    Test initialize().
    """
    from spatialdata.spatialdb.SimpleDB import SimpleDB
    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    from pyre.units.time import second

    ioFinalSlip = SimpleIOAscii()
    ioFinalSlip.inventory.filename = "finalslip.spatialdb"
    ioFinalSlip._configure()
    dbFinalSlip = SimpleDB()
    dbFinalSlip.inventory.iohandler = ioFinalSlip
    dbFinalSlip.inventory.label = "final slip"
    dbFinalSlip._configure()
    
    ioSlipTime = SimpleIOAscii()
    ioSlipTime.inventory.filename = "sliptime.spatialdb"
    ioSlipTime._configure()
    dbSlipTime = SimpleDB()
    dbSlipTime.inventory.iohandler = ioSlipTime
    dbSlipTime.inventory.label = "slip time"
    dbSlipTime._configure()
    
    from pylith.faults.StepSlipFn import StepSlipFn
    slipfn = StepSlipFn()
    slipfn.inventory.dbSlip = dbFinalSlip
    slipfn.inventory.dbSlipTime = dbSlipTime
    slipfn._configure()

    eqsrc = EqKinSrc()
    eqsrc.inventory.originTime = 5.3*second
    eqsrc.inventory.slipfn = slipfn
    eqsrc._configure()
    eqsrc.preinitialize()
    eqsrc.verifyConfiguration()
    eqsrc.initialize()
    return

  def test_initialize(self):
    """
    Test initialize().
    """
    from spatialdata.spatialdb.SimpleDB import SimpleDB
    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    from spatialdata.spatialdb.TimeHistory import TimeHistory

    ioFinalSlip = SimpleIOAscii()
    ioFinalSlip.inventory.filename = "finalslip.spatialdb"
    ioFinalSlip._configure()
    dbFinalSlip = SimpleDB()
    dbFinalSlip.inventory.iohandler = ioFinalSlip
    dbFinalSlip.inventory.label = "slip amplitude"
    dbFinalSlip._configure()
    
    ioSlipTime = SimpleIOAscii()
    ioSlipTime.inventory.filename = "sliptime.spatialdb"
    ioSlipTime._configure()
    dbSlipTime = SimpleDB()
    dbSlipTime.inventory.iohandler = ioSlipTime
    dbSlipTime.inventory.label = "slip time"
    dbSlipTime._configure()
    
    dbTimeHistory = TimeHistory()
    dbTimeHistory.inventory.filename = "slipfn.timedb"
    dbTimeHistory.inventory.label = "time history"
    dbTimeHistory._configure()
    
    slipFn = TimeHistorySlipFn()
    slipFn.inventory.dbslip = dbFinalSlip
    slipFn.inventory.dbSlipTime = dbSlipTime
    slipFn.inventory.dbTimeHistory = dbTimeHistory
    slipFn._configure()
    slipFn.preinitialize()
    slipFn.verifyConfiguration()
    slipFn.initialize()
    return

  def _initialize(self):
    """
    Initialize fault.
    """
    dt = 2.4
    
    from spatialdata.units.Nondimensional import Nondimensional
    normalizer = Nondimensional()
    normalizer._configure()

    # Setup mesh
    cs = CSCart()
    cs.inventory.spaceDim = 2
    cs._configure()

    from pylith.meshio.MeshIOAscii import MeshIOAscii
    importer = MeshIOAscii()
    importer.inventory.filename = "data/tri3.mesh"
    importer.inventory.coordsys = cs
    importer._configure()
    mesh = importer.read(debug=False, interpolate=False)

    # Setup quadrature
    from pylith.feassemble.FIATSimplex import FIATSimplex
    cell = FIATSimplex()
    cell.inventory.dimension = 1
    cell.inventory.degree = 1
    cell.inventory.order = 1
    cell._configure()
    from pylith.feassemble.Quadrature import Quadrature
    quadrature = Quadrature()
    quadrature.inventory.cell = cell
    quadrature._configure()

    # Setup earthquake source
    from spatialdata.spatialdb.SimpleDB import SimpleDB
    from spatialdata.spatialdb.SimpleIOAscii import SimpleIOAscii
    ioFinalSlip = SimpleIOAscii()
    ioFinalSlip.inventory.filename = "data/tri3_finalslip.spatialdb"
    ioFinalSlip._configure()
    dbFinalSlip = SimpleDB()
    dbFinalSlip.inventory.iohandler = ioFinalSlip
    dbFinalSlip.inventory.label = "final slip"
    dbFinalSlip._configure()
    
    ioSlipTime = SimpleIOAscii()
    ioSlipTime.inventory.filename = "data/tri3_sliptime.spatialdb"
    ioSlipTime._configure()
    dbSlipTime = SimpleDB()
    dbSlipTime.inventory.iohandler = ioSlipTime
    dbSlipTime.inventory.label = "slip time"
    dbSlipTime._configure()
    
    from pylith.faults.StepSlipFn import StepSlipFn
    slipfn = StepSlipFn()
    slipfn.inventory.dbSlip = dbFinalSlip
    slipfn.inventory.dbSlipTime = dbSlipTime
    slipfn._configure()

    # Setup fault
    fault = FaultCohesiveKin()
    fault.inventory.output.inventory.writer._configure()
    fault.inventory.output._configure()
    fault.inventory.matId = 10
    fault.inventory.faultLabel = "fault"
    fault.inventory.upDir = [0, 0, 1]
    fault.inventory.faultQuadrature = quadrature
    fault._configure()
    eqsrc = fault.eqsrcs.components()[0]
    eqsrc.inventory.originTime = 1.23*second
    eqsrc.inventory.slipfn = slipfn
    eqsrc._configure()

    nvertices = fault.numVerticesNoMesh(mesh)
    firstFaultVertex = 0
    firstLagrangeVertex = nvertices
    firstFaultCell      = 2*nvertices
    fault.adjustTopology(mesh, firstFaultVertex, firstLagrangeVertex,
                         firstFaultCell)
    fault.preinitialize(mesh)
    fault.timeStep(dt)
    fault.verifyConfiguration()
    from pyre.units.time import s
    fault.initialize(totalTime=0.0*s, numTimeSteps=1, normalizer=normalizer)

    # Setup fields
    from pylith.topology.SolutionFields import SolutionFields
    fields = SolutionFields(mesh)
    fields.add("residual", "residual")
    fields.add("dispIncr(t->t+dt)", "displacement_increment")
    fields.add("disp(t)", "displacement")
    fields.solutionName("dispIncr(t->t+dt)")

    residual = fields.get("residual")
    residual.subfieldAdd("displacement", cs.spaceDim(), residual.VECTOR)
    residual.subfieldAdd("lagrange_multiplier", cs.spaceDim(), residual.VECTOR)
    residual.subfieldsSetup()
    residual.setupSolnChart()
    residual.setupSolnDof(cs.spaceDim())
    fault.setupSolnDof(residual)
#.........这里部分代码省略.........

mask1 = z >= -15.6e+3

Pf = -densityW*gacc*z
Szz = density*gacc*z
Szz[z > -1.0] = (density-densityW)*gacc*-10.0

Syy = mask1*(b22*(Szz+Pf)-0*Pf) + ~mask1*Szz
Sxx = mask1*(b33*(Szz+Pf)-0*Pf) + ~mask1*Szz
Sxy = mask1*(-b23*(Szz+Pf)) + ~mask1*0.0

Syz = 0.0*z
Sxz = 0.0*z

writer = SimpleIOAscii()
writer.inventory.filename = "empty"
writer._configure()


# ----------------------------------------------------------------------
# Initial stresses in domain
writer.filename("%s_initial_stress.spatialdb" % sim)
dataOut = {'points': points,
           'coordsys': cs,
           'data_dim': 1,
           'values': [{'name': 'stress-xx', 
                       'units': 'Pa',
                       'data': Sxx},
                      {'name': 'stress-yy', 
                       'units': 'Pa',

  def _makeSpatialdb(self):
    """
    Function to generate a set of spatial databases (one for each impulse).
    """

    # Create empty arrays for impulse values.
    # Only array1 will be modified.
    array1 = numpy.zeros( (self.numFaultVertices,), dtype=numpy.float64)
    array2 = numpy.zeros( (self.numFaultVertices,), dtype=numpy.float64)

    # Set up info for arrays that won't be modified.
    if (self.impulseType == "left-lateral-slip"):
      info2 = {'name': "fault-opening",
               'units': "m",
               'data': array2.flatten()}
      if (self.spaceDim == 3):
        info3 = {'name': "reverse-slip",
                 'units': "m",
                 'data': array2.flatten()}
    elif (self.impulseType == "fault-opening"):
      info2 = {'name': "left-lateral-slip",
               'units': "m",
               'data': array2.flatten()}
      if (self.spaceDim == 3):
        info3 = {'name': "reverse-slip",
                 'units': "m",
                 'data': array2.flatten()}
    elif (self.impulseType == "reverse-slip"):
      info2 = {'name': "left-lateral-slip",
               'units': "m",
               'data': array2.flatten()}
      info3 = {'name': "fault-opening",
               'units': "m",
               'data': array2.flatten()}

    # Create root output filename.
    suffIndex = self.spatialdbOutputRoot.rfind(".spatialdb")
    outputRoot = self.spatialdbOutputRoot
    if (suffIndex != -1):
      outputRoot = self.spatialdbOutputRoot[:suffIndex - 1]

    # Set data dimension.
    dataDim = self.spaceDim - 1
    
    # Loop over impulses to generate and modify the appropriate entries.
    for impulse in range(self.numFaultVertices):

      # Set filename
      impulseNum = int(impulse)
      impulseString = repr(impulseNum).rjust(self.impulseNumberWidth, '0')
      filename = outputRoot + "_i" + impulseString + ".spatialdb"
      writer = SimpleIOAscii()
      writer.inventory.filename = filename
      writer._configure()

      # Modify database values.
      array1[impulse] = self.impulseValue
      if (impulse > 0):
        array1[impulse - 1] = -self.impulseValue
      
      if (impulse > 1):
	array1[impulse - 2] = 0.0
      info1 = {'name': self.impulseType,
               'units': "m",
               'data': array1.flatten()}

      # Create data and write it to a database.
      if (self.spaceDim == 2):
        data = {'points': self.faultVertices,
                'coordsys': self.geometry.coordsys,
                'data_dim': dataDim,
                'values': [info1, info2]}
      else:
        data = {'points': self.faultVertices,
                'coordsys': self.geometry.coordsys,
                'data_dim': dataDim,
                'values': [info1, info2, info3]}

      writer.write(data)

    return